Too slow of a beginning to be Don Quixote. It sounds more like a soldier, eager for battle, marching, then reaching the battle and realizing all that he misses. He is faced with hunger, long treks, but then reaches victory, only to have the war prolonged farther still. But the adventure continues, and where it leads, the adventurer follows.

All I can say is that this is a beautiful song with a natural quality, as if it was performed using real string instruments. Yet I worry that some classical music zero-voters will get a hold of this as it becomes more popular.

So, your friend(or whoever he is), TripleS, played the violin. Well, he did an excellent, and i know what i'm talking about, 'cause i'm a violonist myself.

About the mood, well, there's plenty of ways to interpret it. In fact, i think you didn't aimed a particular mood, didn't you? So, yeah, i can't really say how do i interpret your song.

And at last, the reverb you added on each instrument is really an essential thing. It would sound empty without it. Oh, and the pause between the two parts was a bit long, but nothing serious.

Well, i think i said it all. No advice to give, really, you do know your stuff.
Just keep up the great work!
PS : i'm currently releasing a new series of songs, called "Major Arcana". I just thought it might interest you.